package com.itheima.consumer.controller;

import com.itheima.consumer.pojo.User;

import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import org.springframework.cloud.client.discovery.DiscoveryClient;

import java.util.List;

@RestController
@RequestMapping("/consumer")
@Slf4j
@DefaultProperties(defaultFallback = "defaultFallback")
public class ConsumerController {
    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("/{id}")
    @HystrixCommand(fallbackMethod = "queryByIdFallback")
    public String queryById(@PathVariable long id){
        /*String url=null;
        List<ServiceInstance> instances = discoveryClient.getInstances("user-service");
        ServiceInstance serviceInstance = instances.get(0);
        url = "http://" + serviceInstance.getHost() + ":" + serviceInstance.getPort()
                + "/user/" + id;
        System.out.println(url);*/
        String url="http://user-service/user/"+id;
        return restTemplate.getForObject(url,String.class);
    }
    public String fallbackMethod(long id){
//        log.error("查询用户信息失败。id：{}", id);
        return "对不起，网络异常";
    }
    public String defaultFallback(){
        return "默认提示：对不起，网络太拥挤了！";
    }
}
